Update Active Admin to 4.0.0.beta19 (Tailwind 4)

Gemfile.lock

@@ -84,8 +84,8 @@ GEM
       securerandom (>= 0.3)
       tzinfo (~> 2.0, >= 2.0.5)
       uri (>= 0.13.1)
-    addressable (2.8.7)
-      public_suffix (>= 2.0.2, < 7.0)
+    addressable (2.8.8)
+      public_suffix (>= 2.0.2, < 8.0)
     arbre (2.2.1)
       activesupport (>= 7.0)
     base64 (0.3.0)
@@ -102,7 +102,7 @@ GEM
       regexp_parser (>= 1.5, < 3.0)
       xpath (~> 3.2)
     concurrent-ruby (1.3.5)
-    connection_pool (2.5.4)
+    connection_pool (3.0.2)
     crass (1.0.6)
     cssbundling-rails (1.4.2)
       railties (>= 6.0.0)
@@ -145,7 +145,7 @@ GEM
       pp (>= 0.6.0)
       rdoc (>= 4.0.0)
       reline (>= 0.4.2)
-    json (2.16.0)
+    json (2.17.1)
     kaminari (1.2.2)
       activesupport (>= 4.1.0)
       kaminari-actionview (= 1.2.2)
@@ -197,7 +197,7 @@ GEM
     psych (5.2.6)
       date
       stringio
-    public_suffix (6.0.2)
+    public_suffix (7.0.0)
     puma (7.1.0)
       nio4r (~> 2.0)
     racc (1.8.1)
@@ -207,7 +207,7 @@ GEM
       rack (>= 3.0.0)
     rack-test (2.2.0)
       rack (>= 1.3)
-    rackup (2.2.1)
+    rackup (2.3.1)
       rack (>= 3)
     rails (8.1.1)
       actioncable (= 8.1.1)
@@ -244,7 +244,7 @@ GEM
       activerecord (>= 7.2)
       activesupport (>= 7.2)
       i18n
-    rdoc (6.15.1)
+    rdoc (6.16.1)
       erb
       psych (>= 4.0.0)
       tsort
@@ -284,7 +284,7 @@ GEM
       mini_portile2 (~> 2.8.0)
     sqlite3 (2.8.1-arm64-darwin)
     sqlite3 (2.8.1-x86_64-linux-gnu)
-    stringio (3.1.8)
+    stringio (3.1.9)
     thor (1.4.0)
     timeout (0.4.4)
     tsort (0.2.0)
@@ -326,7 +326,7 @@ DEPENDENCIES
   tzinfo-data
 
 RUBY VERSION
-   ruby 3.4.7p58
+  ruby 3.4.7p58
 
 BUNDLED WITH
-   2.7.2
+  4.0.0

app/assets/stylesheets/active_admin.css

@@ -1,3 +1,3 @@
-@tailwind base;
-@tailwind components;
-@tailwind utilities;
+@import "tailwindcss";
+
+@config "../../../tailwind-active_admin.config.js";

package.json

@@ -1,12 +1,13 @@
 {
   "name": "app",
   "private": "true",
+  "type": "module",
   "dependencies": {
-    "@activeadmin/activeadmin": "4.0.0-beta18",
-    "tailwindcss": "^3.4.18"
+    "@activeadmin/activeadmin": "4.0.0-beta19",
+    "tailwindcss": "^4.1.17"
   },
   "scripts": {
-    "build:css": "npx tailwindcss -i ./app/assets/stylesheets/active_admin.css -o ./app/assets/builds/active_admin.css --minify -c tailwind-active_admin.config.js"
+    "build:css": "npx @tailwindcss/cli -i ./app/assets/stylesheets/active_admin.css -o ./app/assets/builds/active_admin.css --minify"
   },
   "packageManager": "yarn@1.22.19"
 }

tailwind-active_admin.config.js

@@ -1,7 +1,9 @@
-const execSync = require('child_process').execSync;
+import { execSync } from 'child_process';
+import activeAdminPlugin from '@activeadmin/activeadmin/plugin';
+
 const activeAdminPath = execSync('bundle show activeadmin', { encoding: 'utf-8' }).trim();
 
-module.exports = {
+export default {
   content: [
     `${activeAdminPath}/vendor/javascript/flowbite.js`,
     `${activeAdminPath}/plugin.js`,
@@ -14,6 +16,6 @@ module.exports = {
   ],
   darkMode: "selector",
   plugins: [
-    require(`@activeadmin/activeadmin/plugin`)
+    activeAdminPlugin
   ]
 }